ID-based Safety Message Authentication for Security and Trust in Vehicular Networks

We present a safety message authentication scheme for vehicular ad hoc networks using an ID-based signature and verification mechanism. An ID-based technique offers a certificate-less public key verification, while a proxy signature provides flexibilities in message authentication and trust management. In this scheme, we incorporate an ID-based proxy signature framework with the standard ECDSA for VANET's road-side unit (RSU) originated safety application messages. Also, forwarding of signed messages are specially handled to ensure the trust and authentication of RSU's application messages. We claim that this scheme is resilient against all major security threats and also efficient in terms of computation complexity.